Energy and environmental usage of super porous poly(2-acrylamido-2-methyl-1-propan sulfonic acid) cryogel support

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorSeven, Fahriye
dc.date.accessioned2025-01-27T20:45:25Z
dc.date.available2025-01-27T20:45:25Z
dc.date.issued2014
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractSuperporous and nonporous poly(2-acrylamido-2-methyl-1-propansulfonic acid) [p(AMPS)] cryogels and hydrogels were prepared under freezing conditions (-18 degrees C) and at room temperature (25 degrees C), respectively. The swelling equilibrium values of the p(AMPS) cryogels were extremely fast, 3600 fold faster than those of conventional hydrogels. The p(AMPS) cryogels were further employed as highly effective supports for the in situ preparation of metal nanoparticles within superporous networks, by loading Co(II) and Ni(II) ions into the cryogel network from aqueous environments and reducing with NaBH4. The Co metal nanoparticle-containing cryogel composites demonstrated superior catalytic performances in comparison to nonporous p(AMPS) hydrogel composites for energy and environmental applications e. g., hydrogen production from the hydrolysis of sodium borohydride, and reduction of 4-nitrophenol to 4-aminophenol. The energy applications of cryogel-based p(AMPS)-Co metal composites, especially, were investigated in detail. The effect of various parameters on the rate of the hydrogen generation reaction, such as porosity, metal types, pH, the types of reaction water, temperature and reuse of catalyst, were examined for the p(AMPS)-Co cryogel composite materials. With the p(AMPS)-Co cryogel composite a very high hydrogen generation rate of 14 501 mL H-2 per min per g of Co was attained. This value is one of the best recorded values in comparison to the values obtained for other similar catalysts reported in the literature. p(AMPS)-Co composite cryogels were repeatedly used without significant loss of catalytic activity (82%) even after five repetitive uses for catalytic hydrolysis reactions with NaBH4. Additionally, a very low activation energy for the p(AMPS)-Co cryogel composite systems was attained: E-a = 15.40 +/- 0.3 kJ mol(-1).
dc.description.sponsorshipScientitic and Technological Research Council of Turkey [113T042, 110T649]
dc.description.sponsorshipThis work was supported by the Scientitic and Technological Research Council of Turkey (113T042) and (110T649).
dc.identifier.doi10.1039/c4ra01386g
dc.identifier.endpage23897
dc.identifier.issn2046-2069
dc.identifier.issue45
dc.identifier.scopus2-s2.0-84902436398
dc.identifier.scopusqualityQ1
dc.identifier.startpage23886
dc.identifier.urihttps://doi.org/10.1039/c4ra01386g
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24560
dc.identifier.volume4
dc.identifier.wosWOS:000337145900067
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofRsc Advances
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectMetal Nanoparticle Preparation
dc.subjectHydrogen Generation
dc.subjectCatalytic-Reduction
dc.subjectHydrolysis Kinetics
dc.subjectCo
dc.subjectCobalt
dc.subjectReactor
dc.subject4-Nitrophenol
dc.subjectNanocomposite
dc.subjectAggregation
dc.titleEnergy and environmental usage of super porous poly(2-acrylamido-2-methyl-1-propan sulfonic acid) cryogel support
dc.typeArticle

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